Aluminum Pool Enclosures

Any great tips on how to remove algae especially on the hard to reach areas over the pool? I only have 3500 psi p/w and a flojet chemical sprayer no x-jet or anything like it any suggestions would be very helpful.

Thanks a lot guys!
Andrew/Safe Clean

soap +chlorine (make sure they mix ok test a little) add an extension pole *Done cleaning made easy LOL